Centrifugal cream-separator.



G. H. HACKETTK: T. W. MORGAN.

GENTRIFUGAL CREAM SEPABATOR.

APPLICATION FILED DEC. 21, 1901.

- 907, 143 Patented Dec. 22, 1908.

WITNESSES: uvvszvmres o. fljmckat 0Q 1114 Morgan,

THE NORRIS Pin-Rs cm, WASHINGTON, a c.

G. H. HAGKETT & T. W. MORGAN. GENTRIFUGAL CREAM SEPARATOR. APPLICATIONIILED mic. 21,1907.

907,143. Patented Dec.22 ,1908.

2 SHEETS-SHEET 2.

THE NORRIS PETERS 00., wrist-Imam, v. c.

UNITED s'rnrpsrnrnur oFFIoE.

CHARLES H. HAGKETT THOMAS W. MORGAN, OF WATERLOO, IOWA, ASSIGNORS TOWILBUR W. MARSH, OF WATERLOO, IOWA.

CENTRIFUGAL CBE AM-SE PARATOR.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed. December 21, 1907. Serial N 0. 407,465.

To all whom it may concern:

Be it known that we, CHARLES H. HAoK- ETT and THOMAS W. MORGAN, citizensof the United States of America, and residents of Waterloo, Blackhawkcounty, Iowa, have invented certain new and useful Improvements inCentrifugal Cream-Separators, of which the following is a specification.

'Our invention relates to improvements in centrifugal cream separators,and the object of our improvement is to provide a liner for a separatorbowl, composed of a vertical series of separated superimposed frusta,the said series being arranged in a plurality of sets of frusta, eachset truncated to a different depth from the others, grouped in the bowlso as to have the more deeply truncated frusta nearest the milk inletand the others arranged in successive groups above, the effect being todiminish the axial openings of the series by steps in a directionrunning from the milk inlet to the milk outlet at the opposite end ofthe bowl, and thus give more clearance space for the cream at that artof the bowl where it begins to separate i iom the full milk than at theother parts of the axial hollow where less clearance space is necessaryfor that purpose but a greater amount of baffling surface in the frustais useful. This object we have accomplished by the means which arehereinafter described and claimed, and which are illustrated in theaccompanying drawing, in which Figure 1 is a vertical central axialsection of a centrifugal cream separator bowl con taining our improvedliner. Fig. 2 is a perspective of the cylinder n and its frustal base Z.

The separator bowl a is furnished with a conical cover I) having acylindrical upward extension whose axial hollow is designed to containthe clamping-bolt d. The latter has a fillet at its upper end to engagewith the top of said cover, while the inner portion of the lower end ofits axial cavity 0 is interiorly threaded to engage the outer threads ona removable plug g, the lower end it of the latter being threaded toenga e threads in an axial orifice i in the bottom 73 of the bowl or. Bythis means the cover may be securely clamped down upon said bowl. Thecentral hollow e of said bolt or inlet-tube d communicates with theinterior of the bowl or by,

means of an opening f in the wall of the tube.

A hollow cylinder n is adapted to detachably embrace the axialinlet-tube d for a portion of the latters length within the bowl, butthe lower portion of said cylinder is expanded to form a hollow frustumZ Whose top is covered except for the axial opening and a plurality oforifices m, the latter forming a means of communication between thecavity under said frustum Z and the cream zone of the bowl situatedabout the exterior of the said cylinder n.

The frustum Z surrounds the lower por tion of the tube d, so that thefull milk may be discharged from the inlet f thereunder to pass upwardinto the bowl through the openings m, the latter extending far enoughradially as to afford opportunity for such full milk to move upward intothe bowl without the cream zone and without interference with thelatter.

The cavity of the bowl a above the frustum l is filled with a verticalseries of superimposed frusta spaced apart, such series however beingdivided into several groups of frusta, each of said groups beingtruncated differently from the others. The frusta being of the samegeneral dimensions, and concentric, the lowermost group composed of aplurality of frusta p, is most deeply truncated. The groups composed ofthe less deeply truncated frusta r and shre located respectively abovethe group p and each other as shown. It is not intended to confineourselves, however, to any particular number of such varying groups offrusta, any desired number may be used in which each group consists oftwo or more units, Without derogating from the scope of our invention.

In order to keep the various groups above described in proper concentricarrangement in the bowl, we have supplied radial but tresses o integralwith and rojecting out ward from the cylinder n. ach of the buttressesconsists of the stepped portions shown, of which the lowermost is thewidest, the others decreasing in width to correspond withthe lesseningtruncations of the groups of frusta 1" and s. The said buttresses thusserve as graduated spacers for the respective groups of frusta, andserve to keep them all in proper alinement.

Theuppermost frustum t has its top closed in by an annular plate y'adapted to fit removably about the tube d. the top of the cylinder njust contacting with its lower surface.

The plate is perforated to receive a tube a which is fixed therein so asto have its lower end project a short distance below it and into agroove .2 in the outer wall of the cylinder n, so as to drain oif thecream in the cream zone below. The tube u is adapted to be removablyinserted in a bored out hole w in the cover I), and another passage insaid cover at 00 serves to effect a communication between the interiorof the tube a and the exterior of the bowl. A milk-exit c is provided inthe cover b at the opposite end of the bowl from the milk-inlet openingf.-

In operation the milk which is ejected through the port f below thefrustum Z, moves upward through the openings m and just outside of thecream Zone through the liner, and is sprayed outward into the interspaces of the superposed frusta in the usual manner. The arrangement ofthe frusta into groups as shown, thus affords greater amount ofclearance space for the separating cream in the early part of the milkscourse at which time the full milk readily separates from its copiousproportion of cream, and

more space is required for its reception. In

its continued passage upward, the current of depleted milk needs lessspace for its reception, so the spaces between the truncatededges of thefrusta are lessened at predetermined distances, and the overarchingedges of the latter frusta thus afford additional baffling andcollecting surfaces to catch and deliver the smaller globules of creamwhere the depleted milk requires less space for its passage between theparts of the liner.

Having described our invention, what we claim as new and desire tosecure by Letters Patent, is

1. In a centrifugal cream separator, the combination with a bowl havinga cream exit, a milk inlet in one end and a milk exit in the other end,of a series of superimposed separated hollow frusta contained therein,arranged in groups, the groups being differently truncated to have axialopenings of differing diameters, the most deeply trun cated group beinglocated nearest the milk inlet, and the other groups arrangedsuccessively above it, so as to provide an axial channel through saidliner abruptly diminishing in diameter in steps in a direction from thesaid milk inlet to the milk exit.

2. In a centrifugal cream separator, the combination with a bowl havinga cream exit, a milk inlet in one end and a milk exit in the other end,of a series of superimposed separated hollow frusta contained in saidbowl, the frusta being arranged in groups of several frusta each, thegroups being differently truncated to have the axial openings of eachgroup of a different diameter than the axial openings of any othergroup, the most deeply truncated group being located nearest the milkinlet, and the other groups arranged successively above it, so as toprovide an axial channel through said liner abruptly diminishing indiameter with each change of group in a direction leading from said milkinlet to the milk exit, and means for spacing said respective groups offrusta and holding them in the same concentric alinement in said bowl.

3. In a centrifugal cream separator, the combination with a bowl havinga cream exit, and a milk exit at one end, of a milkinlet tube having itsdelivery end at the opposite end of the bowl from the milk exit, acylinder removably seated about said inlet-tube, said cylinder having anexpanded lower end resting upon the bottom of the bowl and spaced awayfrom the lower end of the inlet-tube, said expanded portion alsoprovided with a plurality of channels adjacent to the inlet-tube toafford communi' cation between the milk-inlet and the inner zone of thebowl above said expansion, and a series of superimposed separated hollowfrusta in said bowl seated above said expanded portion of the cylinder,the frusta being arranged in groups of several frusta each, all thefrusta in each group being truncated alike, but the frusta of thedifferent groups being differently truncated so as to have the axialopenings of each group of a different diameter than the axial openingsof any other group, the most deeply truncated group being locatednearest the milk inlet delivery opening, and the other groups arrangedsuccessively above .it, so as to provide an axial channel through saidliner abruptly diminishing in diameter with each change of group in adirection leading from said milk inlet delivery opening to saidmilkexit, and stepped radial wings projecting from the said cylinderadapted to secure said respective groups of frusta in the sameconcentric alinement in said bowl.

Signed at Waterloo, Iowa, this 2d day of Dec, 1907.

CHARLES i-r. HAOKETT. THOMAS w. MORGAN.

Witnesses:

O. D. YOUNG, G. G. KENNEDY.

